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Commit 45df8b54 authored by Raghavendra Rao Ananta's avatar Raghavendra Rao Ananta Committed by Rishabh Bhatnagar
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esoc: Introduce a higher level reset under boot fail action 



Introduce a higher level of reset for the external modem
as a recovery mechanism. This would act as a more aggressive
way to recover the modem if the lower level of resets
didn't work for recovery.

Change-Id: I1cfc93da9cfe90cc6e3244330184d78a02f54c50
Signed-off-by: default avatarRaghavendra Rao Ananta <rananta@codeaurora.org>
parent c803632b

drivers/esoc/esoc-mdm-drv.c

+11 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ enum esoc_boot_fail_action { 
	BOOT_FAIL_ACTION_SHUTDOWN,

	BOOT_FAIL_ACTION_PANIC,

	BOOT_FAIL_ACTION_NOP,

	BOOT_FAIL_ACTION_S3_RESET,

};



static unsigned int boot_fail_action = BOOT_FAIL_ACTION_NOP;
@@ -65,6 +66,8 @@ struct mdm_drv { 
};

#define to_mdm_drv(d)	container_of(d, struct mdm_drv, cmd_eng)



#define S3_RESET_DELAY_MS	1000



static void esoc_client_link_power_off(struct esoc_clink *esoc_clink,

							unsigned int flags);

static void esoc_client_link_mdm_crash(struct esoc_clink *esoc_clink);
@@ -353,6 +356,14 @@ static int mdm_handle_boot_fail(struct esoc_clink *esoc_clink, u8 *pon_trial) 
		(*pon_trial)++;

		mdm_power_down(mdm);

		break;

	case BOOT_FAIL_ACTION_S3_RESET:

		mdm_subsys_retry_powerup_cleanup(esoc_clink,

							ESOC_HOOK_MDM_DOWN);

		esoc_mdm_log("Doing an S3 reset\n");

		(*pon_trial)++;

		mdm_power_down(mdm);

		msleep(S3_RESET_DELAY_MS);

		break;

	case BOOT_FAIL_ACTION_PANIC:

		esoc_mdm_log("Calling panic!!\n");

		panic("Panic requested on external modem boot failure\n");